Write two sentences for each situation. Use needn't have in the first sentences and could have in the second.( as in the example). For could have, see Unit 27.

1. Why did you walk home? Why didn't you take a taxi?

=> You needn't have walked home. You could have taken a taxi

2. Why did you stay at a hotel? Why didn't you stay with us?

=> You needn't have stayed at a hotel. You could have stayed with us

3. Why did she phone me in the middle of the night? Why didn't she wait until the morning?

=> She needn't have phoned me in the middle of the night. She could have waited until the morning

4. Why did you leave without saying anything? Why didn't you say goodbye?

=> You needn't have left without saying anything. You could have said goodbye

1) she didn't call me last because she didn't know my phone number.

=> If she had known my phone number,she would have called me last ..

2) they cancelled the trip because it rained heavily.

=> If it hadn't rained heavily,they wouldn't have cancelled the trip

3) I didn't buy a bicycle because I didn't have enough money.

=> I would have bought a bike if I had had enough money

4) you got into so much trouble because you didn't listen to me.

1) she didn't call me last because she didn't know my phone number.

=> If ....she had known my phone number,she would have called me last.......

2) they cancelled the trip because it rained heavily.

=> If .....hadn't rained heavily,they would have cancelled the trip.....

3) I didn't buy a bicycle because I didn't have enough money.

4) you got into so much trouble because you didn't listen to me.

=> Had ...you listened to me,you wouldn't have got into so much trouble.....

A car wasn't driven by you yesterday

The pool wasn't swam by Mary last summer

Milk wasn't drunk last night by them

A house wasn't bought by us last year

Chess wasn't played by John and his friend last month

1) Unless it stops raining, we won't go out.  ---> If it stops raining, we will go out

2) She cooked better than you did. ---> You didn't cook as well as her

3) Unless someone has a key, we can't get into the house. ---> We can only get into the house if someone has a key

4) We didn't go on holiday because we didn't have enough time  

1. If it doesn't stop raining, we won't go out.

2. You didn't cook as well as her.

3. We can only get into the house if someone has a key.

4. If we had had enough money, we would have gone on holiday.

5. My father allowed me to use his car.

6. Researchers on AIDS began to be carried out by scientists in 1980. 

1.because the weather is warm and damp,rice grows very well here

=> If the weather weren't warm and damp, rice wouldn't grow very well here

2.I didn't have an umbrella with me,so i got wet

=> If I had had an umbrella with me, I wouln't have got wet

3.Our heating isn't working and I feel cold

=> If our heating were working, i wouldn't feel cold

4.I didn't go to school on time this morning because the bus was late

=> If the bus hadn't been late, I would have gone to school on time this morning

5.I couldn't get in touch because you didn't tell me where you were

=> If you had told me where you were, I could have got in touch

6.You fell bad because you didn't apologize to her last night

=> If you had apologized to her last night, you wouldn't have felt bad

7.In my opinion,you should go and see that film

=> If I were you, I would go and see that film

8.Go to Britian and you will be able to speak English all day long

=> If you go to Britian, you will be able to speak E all day long

9.I used the dictionary.Otherwise,I wouldn't have known the answers

=> If I hadn't used the dictionary, I wouldn't have known the answers

10.I could have visited my grandparents but I didn't have time

=> If I had had have time, I could have visited my grandparents

1 doesn't she

2 did she

3 does she

4 doesn't she

5 doesn't she

6 did she

7 did she

8 does she

9 does she

10 doesn't she

11 do you

12 have you

13 do you

14 are you

15 have you

16 do you

17 are you

18 are you

19 have you

20 are you

1. She works in a bank, doesn't she?

2. She didn't eat anything,did she?

3. She doesn't talk much,does she?

4. She loves you, does she?

5. She looks very beautiful today, does she?

6. She didn't go,did she?

7. She didn't close the door, did she___?

8. She doesn't drive, _does she__?

9. She doesn't want to go, does she___?

10. She looks tired, _doesn't she__?

11.You don't smoke, _do you__?

12. You haven't got a car, _have you__?

13. You don't know her, __do you_?

14. You aren't going to Rome, _are you__?

15. You haven't been to London, __have you_?

16. You don't like ice cream, _do you__?

17. You aren't twenty-one, __are you_?

18. You aren't still angry, _are you__?

19. You haven't been on holiday, _have you?__ 

20. You aren't from America, _are you__?

1.Mary apologized for not phoning me earlier

2.Nam apologized to Mai for not attending her party

3.They apologized to me for saying so

4.Tom apologized To Mary for not helping her

5.Huy apologized to his friend for not sending him a letter

Dựa theo cấu trúc câu gián tiếp với apologize:

S + apologized + to + sb + for (not) + V_ing : Xin lỗi ai vì làm (không làm) gì

1."I'm sorry I didn't phone you earlier " Mary said.

\(\Rightarrow\) Mary apologized to me for not phoning me earlier.

2."I'm sorry I didn't attend your party" Nam said to Mai.

\(\Rightarrow\) Nam apologized to Mai for not attending her party.

3."We're really sorry for saying so" They told me.

\(\Rightarrow\) They apologized to me for saying so.

4." I'm sorry I couldn't help you" Tom said to Mary.

\(\Rightarrow\) Tom apologized to Mary for not helping her.

5."I'm sorry I didn't send you a letter" Huy said to his friend.

\(\Rightarrow\) Huy apologized to his friend for not sending him a letter.

Good luck!

1. i didn't realize that the traffic lights were red, so i didn't stop

-> i didn't stop because i didn't realize that the traffic lights were red

2. working too much will make you tired

-> if you work too much, you will be tired

3. nam and lan sing very badly

-> nam and lan are bad singer

4. " why don't you repair the electric fan, ba ?"

-> she suggested that ba should repair the electric fan

1.I didn't realize that the traffic lights were red, so i didn't stop

-> I didn't stop because i didn't realize that the traffic lights were red

2. working too much will make you tired

-> if you work too much, you will be tired

3. Nam and lan sing very badly

-> Nam and lan are bad singer

4. " Why don't you repair the electric fan, ba ?"

-> She suggested that ba should repair the electric fan

1. She didn ' t eat anything because she wasn ' t hungry

-> If she had eaten something, she wouldn't have been hungry

2 . The wall wasn't painted , so it looked dirty

-> If the wall had been painted, it wouldn't have looked dirty

3 . I didn ' t wake you up because I didn ' t know you wanted to get up early

-> If i had known you wanted to get up early, i would have woken you up

4 . She didn ' t buy the watch because she didn ' t bring enough money with her

-> If she had brought enough money with her, she would have bought the watch

5 . I had a cold because I walked in the rain

-> If i hadn't walked in the rain, i wouldn't have had a cold